Improved injector for steam-generators



tnd .States ELIJAH WARE, OF SOUTHFORD, CONNECTICUT.

'Letters Patent No. 94,152, dated August 2.4, 1869.

" IMPROVED INJECTOR FOR STEAM-GENERATOR@ The Schedule referred to in these Letters Patent and making part of the same.

nying drawing, forming part of this specification, andY which represents a longitudinal section of an injector constructed ,according to my improvement.

My improvement relates to what is known as the Giffard injector, and will here be described as applied to feeding or supplying a steam-generator with water.

lhe invention consists in a novel construction of the valvular. or regulating-cone of the injector, and arrangement of the outer cone relatively to the steamway or passage through the apparatus, in such manner as, that while Steam .is 'admitted around the outer cone, the water-course is established through the inner one in a twofold direction, and whereby the eiiiciency of the injector is improved and a self-regulating character insured 'to it.

Referring to the accompanying drawing- A represents the main or outer shell of the injector, which should be provided at its discharging end with the usual check-valve, to prevent steam escape or back-action from4 the boiler, and with the usual overflow-pipe or branch, which may be provided with a stop-cock. Y

'lhe opposite end of the shell A is connected with a cross-pipe, B, which isadivided transversely, to establish a steam-inlet, C, and water-inlet D, and from which 'the outer cone E projects, leaving a space, b, all around it that is in communication, by passage c, with the steam-inlet C.

F is the valvular or regulating-cone, that is fitted to have free play-within and beyond the outer cone, being guided by a tinted or winged stem, d, that allows of water passing around it from the inlet D, and through side perforations e, to and through a central hole or longitudinal passage, f, inand through the body or nozzle portion of said inner cone.

This central hole f serves for cool water to pass ahead to the boiler, or for heated water to pass back, as required to regulate the supply. Said hole also operates, as regards controlling the supply, with the space around the valvular cone, as the latter slides a limited distance back and forth.

The general action is as follows:

As steam, admitted to circulate around the outer cone, passes the nozzle end of the latter, it meets with the water oozing around or from the exterior of the inner cone. Should the water not be in sutiioient quantity to establish the feed, a partial vacuum is formed along the inner cone, and at the `nozzle end of' the latter.

The eiiect of the vacuum is to permit cool wat'er to pass through the side apertures e, and out through the central hole f, and also to open wider the inner cone for egress of water around it. V'In this connection it is desirable to use aspn'ng, to establish a proper balance of the valvular cone.

Should the supply of water 'be too abundant, a connteracting pressure is established along the inner cone, and at the end of its nozzle: 'This causes said valvular cone to move slightly back, Which diminishes the delivery of cold water, and also throws, or causes to be thrown backa certain amount of warm or heated water through the hole f.' As the valvular cone slides backward and forward, the opening around it and be@ tween it and the shell will also be widened or contracted, by reason of the conical configuration of the case, as at G, which, in a measure, forms an extension of the outer cone, and which operates in concert with the before-described action of the valvular cone to control the general action.

An injector thus constructed becomes self-regulating, and all uncertainty oi' action from the collection of sediment, as in the ordinary Giiiard injector, about or on the combining and regulating-tube or nozzle is avoided What is here claimed, and desired to be secured by Letters Patent, is-

The combination and arrangement of the valvular regulating-cone F, formed with a longitudinal cent-ral aperture, f, and side openings e, for passage of water through, as well as around or outside of it, the outer cone E, around which steam is admitted, and the conical portion G of .the shell A, substantially as specified.

" Y ELIJAH WARE.

lVitnesses:

EUGENE L. WARE, HATTIE D. MoOLoUD. 

